Tìm x, biết: (x + 1)^2 . (x + 2) = 0

Tìm x, biết:
a) [x+1]^2.[x+2]=0
b) [1/2x+1]^3.[3x-2]^2=0
c) [9x+6]^3.[3x-4]^2.[1-7x]=0
d) [4x-8]^2.[2x+6]^3=0
e) (5 - 7x).x = 0
f) 6x + x^2 + 9 = 0
g) [2x -  1]. [x - 1]^2 = 0